Dust shoe for Kress on a Stepcraft CNC

Dust shoe Kress 1050 FME-P
 

Update 01/23 - posted STEP files on request. 

The Kress 1050 FME-P has the ER-16 Collet system and therefore the clamp nut has a diameter of 25mm instead of the 18mm on the normal Kress.

So, the old dust shoe I had is of no further use because there was not enough clearance in the dust shoe. 

Now the challenge is to adapt the dust extraction shoe to the new parameters.
I want it to be a flexible solution for different spindles eq. different clamping nut sizes.

And this is the result of some drawing and printing.
• Part 1 is the mounting plate suitable for all diameters of clamping nuts.
       This is mounted on the tool-holder plate using the hole in the plate to secure and an extra          clip on the side to prevent turning;
• Part 2 is the washer to secure the mounting plate;
• Part 3 is the adapter ring for the different nut sizes and brushes.
       This is clamped to the clamping ring by 5 magnets on top;
• Part 4 is the brush ring.
       This is a self-made brush ring with an additional utility ring to fill it with brush hairs. 
       The complete brush is than glued to the adapter ring with CA-glue;
• Part 5 is the filling utility ring for the brush
       After the ring is filled and glued remove;
• Part 6 is hose guidance clamp. Not necessary, but can take the stress from the 
       vacuum hose

Part 3, 4 and 5 should be made for every size spindle and/or clamping nut in use.

*** For user who place the Kress direct on the toolholder plate.***
When the Kress is placed direct on the plate the bottom extrudes 12mm under the plate and will seal the dust shoe. To correct this I made a spacer ring of 12mm height so it flushes with the underside of the plate.

- part 7  Spacer ring 12mm height (infill 50%)

Printer settings:
Standard 0,4 nozzle and 0,2mm layer height Filament used PLA or PETG

Part 1 needs a support only under the clip.
Part 2, 3, 4 and 6 no support or extra settings.
Part 5 needs support from build plate. (V-groove up)
 

Extra material used:
10x cylinder magnets Dia 3mm 1,5mm thick
1 set screw M5
CA superglue
Hose Dia 22mm outer 20mm inner
Brush made of dustpan brush or old paint brush

Build:
Put part 5 on part 4 should be a snug fit;
Cut brush and put into utility ring and continue until first quarter is stuffed;
Continue for the rest of the ring;
Tap brush back on table to get the back lined up to the brush-ring;
Test fit part 4 on 3 and secure tight fit;
Remove part 3 from 4 and put some CA glue on brush backside, now glue part 3 on 4 and replace  part 5 from glue area, remove when glue is set;
Last is to glue the 10 mini magnets on part 1 and 3.

Finally trim the brush to your desired length.